Quick Answer
Yes, and you should. Install the eSIM a day or two before your flight over your home Wi-Fi and simply switch it on after you land. Installing early saves you hunting for airport Wi-Fi to scan a QR code after a long flight.
Read the full guide: Best eSIM for Asia Travel (2026 Guide)
Is my phone compatible with an Asia travel eSIM?
Most phones from 2019 onward support eSIM, including iPhone XS and newer, Google Pixel 3 and newer, and recent Samsung Galaxy models. Your phone must also be carrier-unlocked. Check Settings for an Add eSIM option, or dial *#06# to see whether an EID number appears.
Which networks do Asia travel eSIMs use?
Asia travel eSIMs connect to major local carriers in each country, such as AIS or True in Thailand, Softbank or NTT Docomo in Japan, Telkomsel in Indonesia, Viettel in Vietnam and Singtel in Singapore. Coverage is strong in cities, resorts and along main transport routes. On remote islands and in the mountains, signal can thin out on any provider.